Abstract
Efficient cw intracavity frequency doubling of a diode end-pumped laser that operates in the transition at is demonstrated. A long lithium borate crystal, cut for critical type I phase matching at room temperature, was used for second harmonic generation of the fundamental laser. A maximum output power of in the deep blue spectral range at was achieved at an incident pump power of . In 2 h we achieved an optical-to-optical conversion efficiency of 37% with a better than 2.57% power stability.
© 2009 Optical Society of America
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